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Main iron trough castable for small blast furnace
The invention relates to a main iron trough castable for a small blast furnace, belonging to the field of refractory castables. The main iron trough castable comprises the following components in parts by weight: 5-8 parts of 8-5mm tabular corundum, 15-20 parts of 5-3mm chromium nitride, 10-15 parts of 3-1mm sillimanite, 8-15 parts of 1-0mm calcium chromate, 2-5 parts of slightly-viscous clay powder, 3-7 parts of aluminum cobalt oxide powder, 5-10 parts of cutting powder, 3-8 parts of amorphous graphite, 1-2 parts of composite carbon powder, 0-3 parts of molybdenum trioxide powder, 3-5 parts of alumina micropowder, 1-5 parts of iron magnesium oxide, 1-3 parts of rho aluminum oxide and 0-5 parts of electrically-melted calcium aluminate cement; based on 100% of total weight parts of main materials, an additive comprises the following components in parts by weight: 0.1-0.2 part of calcium lignosulphonate, 0.01-0.05 part of nanometer potato flour, 0.01 part of malic acid and 0.1 part of C12H14N4O5S2. The blast furnace produced by using the castable has the characteristics of good thermal shock resistance, high erosion resistance, high iron throughput and long service life.
Main iron trough castable for small blast furnace
The invention relates to a main iron trough castable for a small blast furnace, belonging to the field of refractory castables. The main iron trough castable comprises the following components in parts by weight: 5-8 parts of 8-5mm tabular corundum, 15-20 parts of 5-3mm chromium nitride, 10-15 parts of 3-1mm sillimanite, 8-15 parts of 1-0mm calcium chromate, 2-5 parts of slightly-viscous clay powder, 3-7 parts of aluminum cobalt oxide powder, 5-10 parts of cutting powder, 3-8 parts of amorphous graphite, 1-2 parts of composite carbon powder, 0-3 parts of molybdenum trioxide powder, 3-5 parts of alumina micropowder, 1-5 parts of iron magnesium oxide, 1-3 parts of rho aluminum oxide and 0-5 parts of electrically-melted calcium aluminate cement; based on 100% of total weight parts of main materials, an additive comprises the following components in parts by weight: 0.1-0.2 part of calcium lignosulphonate, 0.01-0.05 part of nanometer potato flour, 0.01 part of malic acid and 0.1 part of C12H14N4O5S2. The blast furnace produced by using the castable has the characteristics of good thermal shock resistance, high erosion resistance, high iron throughput and long service life.
Main iron trough castable for small blast furnace
ZHANG TING (author)
2016-01-06
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME